Grease cup



C. F. VAUGHAN.

GREASE CUP.

APPLICATION FILED AUG.25. I92I- 1,426,929, Patented Aug. 22, 1922.

INS/EN TOR UNITED STATES PATEN @FME CHARLES FREDERIC VAUGHAN, OF LONDON, ENG-LAND.

GREASE CUP.

Serial No. 495,207.

(GRANTED UNDER THE PROVISIONS 0F THE ACT 0F MARCH 3, 1921, 41 STAT. L., 1313.)

To all whom it may concern:

Be it known that I, CHARLES Fnnnnmo VAUGHAN, la subject of the Kin of England, residing at 47 Streatham ill, London, England, S. W. 2., have invented new and useful Improvements in Grease Cups (for Whicht-I have filed application in England May 26, 1915, Patent Number 7821) of which the following is a specification.

This invention relates to grease cups and Vgreaser bolts and it has for its object to avoid the grease passing out between the threads of the cap and the cup, and to pro vide an effective grease cup or greaser bolt.

According to this invention, the cap of the grease cup is provided with an inwardly protruding cylindrical flanO-e adapted to lit closely the inner bore of the cup, and either attached to the cap or formed integrally with it. Preferably the cylindrical flange is split lengthwise and is arranged to exert a resilient pressure on the sides of the cup.

In the accompanying drawings.

Figure l is a sectional elevation of a grease cup suitable for general use upon bearings.

Figure 2 is a part-sectional elevation` shewing the grease cup formed integrally with a shackle pin, and

Figure 3 is a sectional elevation of a grease cup of modified construction.

The cup A at its lower end is provided with a nipple A2 by which the cup may be screwed into its position, and with hexag onal faces or a nut A3 for engagement by a Spanner during this process. The cup A is externally screw threaded at A* for the reception of a cap B, and is internally formed with a plain cylindrical surface or bore A5.

The cap B is internally screw threaded to correspond with the external screw threading of the cup and an inwardly protruding cylindrical flange C is provided centrally within the cap B so that when the latter is screwed into position upon the cup A, the cylindrical flange C closely fits and slides within the cup. By such means the grease, on the rotation of the cap B, is forced into the bearing and does not pass out between the threads. The cap B may have a milled edge or hexagonal faces at B2 to facilitate screwing up and down on the cup.

If desired the inwardly protruding ncylindrical fiange C aforesaid may be in one piece with the cap, or it may be mounted in the cap B as a separate part. In the latter case the construction shown in Figure l may be employed, in which the head of the cap B is drilled through and is there provided with an internal screw thread. This latter is engaged by the small cap C2 integrally provided with the downwardly extending cylindrical part C and is formed at its upper end as a nut C3. The cap C2 is screwed into position within the main cap B so that the lower extremity of the cylindrical flange C may, for example, protrude to a length corresponding to the length of the cap.

Alternatively the cylindrical flange C may take the form of a thin tube C4 and may be soldered into position upon the main cap D as illustrated in Figure 2, or the cylindrical flange C may be provided integrally with the cap D.

To ensure a close fit of the cylindrical flange Ci in the cup A it is preferably spl-it longitudinally at C5, the adjacent edges overlapping' to prevent a leakage of grease into the annular space between it and the walls of the cap D, and the sides of the liange C4 are caused to exert a resilient outward pressure upon the cup, the expansion of the flange C or CA1 being increased by pressure upon the grease or oil within the cup formed by the flange C or C4. This obviates risk of the cap becoming unscrewed accidentally, as well as minimizing or preventing leakage.

In the construction shown in Figure l, the flange C might also, if desired, be slit longitudinally and sprung apart slightly at the split to cause a similar resilient grip upon the cup A. The gap caused by the split may be protected by a covering.y if desired, to prevent leakage.

For use upon the shackle pins of suspension springs or for like purposes, the cup A may be formed integrally with a pin E as shewn by Figure 2, and the cap with its cylindrical internal flange may be constructed either as shewn in Figure l or as shewn in Figure 3.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1n a grease eup the combination of a eupshaped body part having a- Cylindrical re# cess, a discharge Conduit at the hase 'of'. an interiorly threaded Gap said recess, adapted to engage 4the threaded outer sui'- face of the said body part, and a Cylindrical flange attached to the said Cap, and ai ranged to extend into the Vsaid likeness Closelyy fitted against the 'Walls thereof, the said Hnge Being olf the sani'ei'length the said cap, and being .longitudinally divided, the

edges :of -the -dividedange oveilappng 

